Monday, March 30th, 2009
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"We present a framework for analyzing privacy and anonymity in social networks and develop a new re-identification algorithm targeting anonymized social-network graphs. To demonstrate its effectiveness on real-world networks, we show that a third of the users who can be verified to have accounts on both Twitter, a popular microblogging service, and Flickr, an online photo-sharing site, can be re-identified in the anonymous Twitter graph with only a 12% error rate."
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Although data sets are anonymised, it is possible to derive user identity by comparing social graphs from Flickr, Twitter, Facebook…
(Similar research succeeded in identifying a big part of the anonymous Netflix data set by comparing preferences for movies in both Netflix and Amazon reviews)
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"callto:" is a "pseudo-protocol". The actual standard is "tel:".
Since "callto:" is being used by Skype and Netmeeting, and "tel:" is recognised natively by most mobile phones, you better use them for desktops and mobile sites respectively, depending on browser user agent detection.
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"two ingredients are now slowly getting into place to turn another privatization attempt of the railways into a success:
1. Full dynamic and open transit data
2. Seamless transit payment"
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